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Quick Summary
Simulate an ATM queue where customers withdraw at most k dollars per turn.
Customers who still need money cycle to the back until their balance reaches zero.
Return the 1-based indices of customers in the exact order they finish.
What This Tests
Queue simulation mechanics
Ceiling division and integer math
Stable sorting and tie-breaking logic
Time-space complexity trade-offs
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Input
amounts =
k =
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Expected
